Search found 8 matches

by elkmug
Thu Dec 06, 2018 12:56 am
Forum: PyBullet Support and Feedback
Topic: calculateMassMatrix question
Replies: 0
Views: 36

calculateMassMatrix question

I've been doing some experiments that require the mass matrix. Pybullet has a calculateMassMatrix method, but it's output is not what I expected. I expected that all values, except on the diagonal, would be zero and they're not. I assume this output is correct and I'm just not understanding things p...
by elkmug
Wed Jan 31, 2018 1:08 am
Forum: PyBullet Support and Feedback
Topic: Playing video or audio in other apps can cause an increase in pybullet simulation performance
Replies: 2
Views: 472

Re: Playing video or audio in other apps can cause an increase in pybullet simulation performance

Wow, Erwin's reply really sent me down a rabbit hole, but in a totally good way, because I actually found one pretty great rabbit down there :) Long story short,(well, shorter than it was) the root cause of not being able use smaller time steps in win7 is how time.sleep() does what it does and win7 ...
by elkmug
Thu Jan 18, 2018 7:01 am
Forum: PyBullet Support and Feedback
Topic: Playing video or audio in other apps can cause an increase in pybullet simulation performance
Replies: 2
Views: 472

Playing video or audio in other apps can cause an increase in pybullet simulation performance

Yeah, you read that right, an increase in simulation performance. Initially this behavior appeared to be random. It happened frequently, but I had no idea why, and I could not reproduce the issue on demand. After a lot of trial and error I can now reliably trigger this behavior with the web browser ...
by elkmug
Mon Dec 11, 2017 9:15 pm
Forum: PyBullet Support and Feedback
Topic: Built-in box visual object has incorrect normals, when created via loading a urdf
Replies: 4
Views: 553

Re: Built-in box visual object has incorrect normals, when created via loading a urdf

>What is 'incorrect' about the normals? The normals are smoothing edges that on a cube shouldn't be smoothed. I don't think anyone would look at the above image and say 'That cube looks correct' :) >If you want unique normals that point in the face direction,why don't you use Bullet/data/cube.obj? ...
by elkmug
Mon Dec 11, 2017 8:09 pm
Forum: PyBullet Support and Feedback
Topic: Built-in box visual object has incorrect normals, when created via loading a urdf
Replies: 4
Views: 553

Re: Built-in box visual object has incorrect normals, when created via loading a urdf

Attached is a zip of a simple script and it's urdfs.

I included the plane.urdf, plane obj, & plane.mtl
from the bullet data folder so things would run from
wherever you extract this
by elkmug
Mon Dec 11, 2017 5:24 pm
Forum: PyBullet Support and Feedback
Topic: Built-in box visual object has incorrect normals, when created via loading a urdf
Replies: 4
Views: 553

Built-in box visual object has incorrect normals, when created via loading a urdf

If you create a urdf that uses the built-in visual representation for a box, it works, but the box does not have proper normals. block.urdf in the bullet data folder can be used to demonstrate the problem but you'll probably have to make the size of the block larger or you won't be able to notice th...
by elkmug
Fri Dec 08, 2017 3:56 pm
Forum: PyBullet Support and Feedback
Topic: pybullet: Synthetic Cameras default to open. Is there a way to change this behavior?
Replies: 2
Views: 794

Re: pybullet: Synthetic Cameras default to open. Is there a way to change this behavior?

All three switches work.
When set to 0 their respective windows do not open and they are not available in the view menu.
When set to 1 they return. :D

Thanks,
Jeff
by elkmug
Fri Dec 08, 2017 4:39 am
Forum: PyBullet Support and Feedback
Topic: pybullet: Synthetic Cameras default to open. Is there a way to change this behavior?
Replies: 2
Views: 794

pybullet: Synthetic Cameras default to open. Is there a way to change this behavior?

Upate: I didn't notice there was a dedicated pybullet section. Is there a way I can move this post? You can close them manually either via window widget or the view menu, but I'm hoping there's way to set them not to open in the first place configureDebugVisualizer doesn't appear to have a setting f...